Noise and Fan Speed (Increased Temperatures)
The passive operation lasts a while even under high temperatures, and the fan-speed profile is not aggressive under those conditions. The platform's high efficiency plays its part in that.
Noise and Fan Speed (~30°C)
The passive operation lasts longer at lower operating temperatures, and the fan's noise doesn't exceed 30 dBA. Actually, at up to around 1120 W load, fan noise is kept below 25 dBA.